<template>
  <div class="departments-container">
    <div class="app-container">
      <el-card class="tree-card">
        <!-- 用了一个行列布局 -->
        <tree-tools
          :node-data="company"
          :is-root="true"
        />

        <!-- 放置一个el-tree组件 -->
        <el-tree
          :data="departs"
          :props="defaultProps"
          :default-expand-all="true"
        >
          <!-- 用了一个行列布局 -->
          <template #default="{ data }">
            <tree-tools
              :node-data="data"
              :is-root="false"
            />
          </template>
        </el-tree>
      </el-card>
    </div>
  </div>
</template>

<script>
import TreeTools from './components/tree-tools.vue'
import { reqGetDepartments } from '@/api/departments'
import { tranListToTreeData } from '@/utils/index'
export default {
  name: 'Departments',
  components: {
    TreeTools
  },
  data() {
    return {
      company: { },
      departs: [],
      defaultProps: {
        label: 'name',
        children: 'children'
      }
    }
  },
  created() {
    this.getDepartments()
  },
  methods: {
    async getDepartments() {
      const { data: { depts, companyName }} = await reqGetDepartments()
      console.log(depts)
      // this.departs = depts
      this.departs = tranListToTreeData(depts, '')
      this.departs = depts
      this.company = {
        name: companyName,
        manager: '负责人'
      }
    }
  }

}
</script>

<style scoped lang="scss">
.tree-card {
  padding: 30px 30px;
  font-size:14px;
}
.el-tree {
  ::v-deep {
    // 小三角的样式, 去掉默认的小三角的旋转效果
    .el-tree-node__expand-icon.expanded {
      -webkit-transform: rotate(0deg);
      transform: rotate(0deg);
    }
    // 有子节点 且未展开 +
    .el-icon-caret-right:before {
      background: url("~@/assets/common/add-circle.png") no-repeat 0 0;
      content: '';
      display: block;
      width: 16px;
      height: 16px;
      font-size: 16px;
      background-size: 16px;
    }
    // 有子节点 且已展开 -
    .el-tree-node__expand-icon.expanded.el-icon-caret-right:before{
      background: url("~@/assets/common/minus-circle.png") no-repeat 0 0;
      content: '';
      display: block;
      width: 16px;
      height: 16px;
      font-size: 16px;
      background-size: 16px;
    }
    // 没有子节点
    .el-tree-node__expand-icon.is-leaf::before  {
      background: url("~@/assets/common/user-filling.png") no-repeat 0 0;
      content: '';
      display: block;
      width: 16px;
      height: 16px;
      font-size: 16px;
      background-size: 16px;
    }
  }
}
</style>
